Chem Lab Final review

The color of phenolphthalein changes from __________ to __________ by addition of a base solution as one reaches the neutralization point.

Clear to Pink

After heating the unknown mixture, the mass of the sample is expected to _____ .

Decrease

The point in a titration at which the indicator changes and the addition of titrant is stopped is called the ______________.

Equivalence Point

How would spilling some of the reaction mixture after weighing affect the calculated KClO3-to-KCl ratio?

The ratio would be too high in KClO3.

Precise determination of the concentration of a solution is called

Titration

A sample of metal pellets is weighed, heated and then added to a calorimeter containing room temperature water. After adding the majority of the metal sample to the calorimeter, it is discovered that some of the metal was not added and has since cooled. If the cooled portion of metal is now added to the calorimeter and the experiment continues, how will the calculated value of the specific heat be affected?

the calculated value of the specific heat will be lower than it should be

In this experiment, the starting temperature of the water receiving the heat from the metal is _____, and the starting temperature of the metal is _____.

the temperature of the water inside the calorimeter; the temperature of the boiling water